Final answer:
Gritty soil texture indicates the presence of sand, which affects soil texture and drainage, and influences the environment for soil organisms.
Step-by-step explanation:
If a soil feels gritty during a "feel" assessment of texture, this indicates that an appreciable amount of sand is present. The gritty texture is characteristic of sandy soils, which are made primarily of larger soil particles compared to clay soils that have very small particles. The size of soil particles has a significant effect on the soil texture, which in turn influences the soil drainage, absorption of nutrients, and the overall environment for organisms present in the soil.